Question

Si: Senx + Cosx = 1/2 . Hallar:

M = Senx.Cosx
porfa :b

Answer 1

senx+cosx=1/2

(senx+cosx)² = (1/2)²

sen²x+2senxcosx+cos²x = 1/4

pero sen²x+cos²x =1 (propiedad), entonces

1+2senxcosx=1/4

2senxcosx = -3/4

senxcosx = -3/8